Estudia
Blockchain-verified records

Attendance tracking you can trust

Estudia anchors every attendance record on the Polygon blockchain, giving students tamper-proof proof of presence and giving institutions auditable records.

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Instant QR check-inOn-chain proof anchoringRole-based access

Everything you need for reliable attendance

From quick QR check-ins to permanent blockchain anchoring, Estudia covers the full workflow.

Tamper-Proof Records
Every attendance entry is hashed and anchored to the Polygon blockchain. No record can be silently altered after the fact.
Instant QR Check-In
Admins generate a session QR code encoding the course, date and status. Students confirm presence in seconds.
Role-Based Access
Separate interfaces for staff and students. Admins record and verify; students view their history and on-chain proofs.
Full Attendance History
Students access a complete chronological record with course, date, status and blockchain transaction links.
On-Chain Verification
Anyone with the record ID can verify that a stored hash matches the on-chain anchor, providing independent proof.
Supabase Auth
Secure email-based authentication with email confirmation and password recovery, powered by Supabase.

How it works

Three simple steps from account creation to a permanent on-chain proof.

01

Create your account

Sign up as a student. Confirm your email and you're in. Admin access is granted by an existing administrator.

02

Record attendance

Admins select the student, course and date. The record is saved and hashed.

03

Anchor on-chain

The keccak256 hash is posted to a Polygon Mumbai smart contract, permanently timestamped.

Ready to bring trust to your classroom?

Create your free account and start recording verifiable attendance in minutes.

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